Split SkPictureReplacementPlayback out of SkPicturePlayback

src/core/SkPicturePlayback.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkPicturePlayback_DEFINED
 #define SkPicturePlayback_DEFINED
 
 #include "SkPictureFlat.h"  // for DrawType
 #include "SkPictureStateTree.h"
 
 class SkBitmap;
 class SkCanvas;
 class SkDrawPictureCallback;
 class SkPaint;
 class SkPictureData;
 
+// The basic picture playback class replays the provided picture into a canvas.
+// If the picture was generated with a BBH it is used to accelerate drawing
+// unless disabled via setUseBBH.
 class SkPicturePlayback : SkNoncopyable {
 public:
     SkPicturePlayback(const SkPicture* picture)
         : fPictureData(picture->fData.get())
         , fCurOffset(0)
-        , fUseBBH(true)
-        , fReplacements(NULL) {
+        , fUseBBH(true) {
     }
     virtual ~SkPicturePlayback() { }
 
     virtual void draw(SkCanvas* canvas, SkDrawPictureCallback*);
 
+    // TODO: remove the curOp calls after cleaning up GrGatherDevice
     // Return the ID of the operation currently being executed when playing
     // back. 0 indicates no call is active.
     size_t curOpID() const { return fCurOffset; }
     void resetOpID() { fCurOffset = 0; }
 
+    // TODO: remove setUseBBH after cleaning up GrGatherCanvas
     void setUseBBH(bool useBBH) { fUseBBH = useBBH; }
 
-    // PlaybackReplacements collects op ranges that can be replaced with
-    // a single drawBitmap call (using a precomputed bitmap).
-    class PlaybackReplacements {
-    public:
-        // All the operations between fStart and fStop (inclusive) will be replaced with
-        // a single drawBitmap call using fPos, fBM and fPaint.
-        // fPaint will be NULL if the picture's paint wasn't copyable
-        struct ReplacementInfo {
-            size_t          fStart;
-            size_t          fStop;
-            SkIPoint        fPos;
-            SkBitmap*       fBM;     // fBM is allocated so ReplacementInfo can remain POD
-            const SkPaint*  fPaint;  // Note: this object doesn't own the paint
-
-            SkIRect         fSrcRect;
-        };
-
-        ~PlaybackReplacements() { this->freeAll(); }
-
-        // Add a new replacement range. The replacement ranges should be
-        // sorted in increasing order and non-overlapping (esp. no nested
-        // saveLayers).
-        ReplacementInfo* push();
-
-    private:
-        friend class SkPicturePlayback; // for access to lookupByStart
-
-        // look up a replacement range by its start offset
-        ReplacementInfo* lookupByStart(size_t start);
-
-        void freeAll();
-
-#ifdef SK_DEBUG
-        void validate() const;
-#endif
-
-        SkTDArray<ReplacementInfo> fReplacements;
-    };
-
-    // Replace all the draw ops in the replacement ranges in 'replacements' with
-    // the associated drawBitmap call
-    // Draw replacing cannot be enabled at the same time as draw limiting
-    void setReplacements(PlaybackReplacements* replacements) {
-        fReplacements = replacements;
-    }
-
 protected:
     const SkPictureData* fPictureData;
 
     // The offset of the current operation when within the draw method
     size_t fCurOffset;
 
     bool   fUseBBH;
-    PlaybackReplacements* fReplacements;
 
     void handleOp(SkReader32* reader, 
                   DrawType op, 
                   uint32_t size, 
                   SkCanvas* canvas,
                   const SkMatrix& initialMatrix);
 
     const SkPicture::OperationList* getActiveOps(const SkCanvas* canvas);
     bool initIterator(SkPictureStateTree::Iterator* iter, 
                       SkCanvas* canvas,
                       const SkPicture::OperationList *activeOpsList);
     static void StepIterator(SkPictureStateTree::Iterator* iter, SkReader32* reader);
     static void SkipIterTo(SkPictureStateTree::Iterator* iter, 
                            SkReader32* reader, uint32_t skipTo);
-    bool replaceOps(SkPictureStateTree::Iterator* iter, 
-                    SkReader32* reader, 
-                    SkCanvas* canvas,
-                    const SkMatrix& initialMatrix);
 
     static DrawType ReadOpAndSize(SkReader32* reader, uint32_t* size);
 
     class AutoResetOpID {
     public:
         AutoResetOpID(SkPicturePlayback* playback) : fPlayback(playback) { }
         ~AutoResetOpID() {
             if (NULL != fPlayback) {
                 fPlayback->resetOpID();
             }
         }
 
     private:
         SkPicturePlayback* fPlayback;
     };
 
 private:
     typedef SkNoncopyable INHERITED;
 };
 
 #endif